The present disclosure is related to an integrity protection method and device. In the method, a first BEARER parameter value is obtained based on at least one of the following: a LCID corresponding to data transmitted in the sidelink communication, an access communication standard adopted by the sidelink communication, a BEARER parameter value allocated for the sidelink communication, or a preset BEARER parameter value. A bit length of the LCID corresponding to the transmitted data is greater than a bit length of the first BEARER parameter value. Based on the first BEARER parameter value, a MAC-I or an XMAC-I for the sidelink communication is calculated.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The integrity protection method according to claim 1, wherein the first BEARER parameter value is obtained in the following manner: truncating N lowest bit values or N highest bit values of the LCID corresponding to the transmitted data to generate the first BEARER parameter value.
3. The integrity protection method according to claim 2, wherein N is equal to an amount of bits of the first BEARER parameter value.
4. The integrity protection method according to claim 3, wherein N is equal to 5.
11. The integrity protection device according to claim 10, wherein the first BEARER parameter value is obtained in the following manner: truncating N lowest bit values or N highest bit values of the LCID corresponding to the transmitted data to generate the first BEARER parameter value.
12. The integrity protection device according to claim 11, wherein N is equal to an amount of bits of the first BEARER parameter value.
13. The integrity protection device according to claim 12, wherein N is equal to 5.
14. The device according to claim 10, wherein when the device is the sender, the processor is configured to execute the computer programs to encapsulate the calculated MAC-I into a Packet Data Convergence Protocol (PDCP) header.
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March 29, 2021
May 7, 2024
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